505055505065 has 16 divisors (see below), whose sum is σ = 610194613392. Its totient is φ = 401294659584.

The previous prime is 505055505047. The next prime is 505055505079. The reversal of 505055505065 is 560505550505.

It can be written as a sum of positive squares in 8 ways, for example, as 14444914969 + 490610590096 = 120187^2 + 700436^2 .

It is a cyclic number.

It is not a de Polignac number, because 505055505065 - 2¹² = 505055500969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1663097 + ... + 1943193.

It is an arithmetic number, because the mean of its divisors is an integer number (38137163337).

Almost surely, 2^505055505065 is an apocalyptic number.

It is an amenable number.

505055505065 is a deficient number, since it is larger than the sum of its proper divisors (105139108327).

505055505065 is a wasteful number, since it uses less digits than its factorization.

505055505065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282556.

The product of its (nonzero) digits is 468750, while the sum is 41.

The spelling of 505055505065 in words is "five hundred five billion, fifty-five million, five hundred five thousand, sixty-five".